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  • Introduction
  • 🏆Features
  • Getting Started
    • Welcome to FM BetterForms!
    • System Overview
    • Quick Tour of the BetterForms IDE
    • 1. Setting Up Your Foundation
      • 1.1 Configure FileMaker Server
      • 1.2 Install BetterForms Helper File
      • 1.3 Add Your Server to BetterForms (IDE)
    • 2. Building Your First Application
      • 2.1 Create an App (Site) in the IDE
      • 2.2 Create Your First Page (Intro to Page Builder)
      • 2.3 Understanding & Managing Environments (IDE)
      • 2.4 Adding Elements to Your Page
      • 2.5 Understanding Validation
      • 2.6 Adding Actions to Your Page
      • 2.7 Creating Your First List View
      • 2.8 Understanding Page Data Flow
      • 2.9 Creating Your First Hook
      • 2.10 Working with Data Tables (Coming Soon)
    • 3. Understanding Core BetterForms Concepts
      • 3.1 Introduction to Hooks (and where to find them in the IDE)
      • 3.2 Running Your First Hook (Practical Example)
      • 3.3 Introduction to Actions & Action Scripts (IDE Context)
      • 3.4 Understanding the Data Model (and Page Data Model UI)
    • 4. Common Customizations & Expanding Your App
      • 4.1 Adding & Configuring Buttons (Page Builder)
      • 4.2 Implementing Page Navigation (Actions & Site Navigation UI)
      • 4.3 Displaying Data in Tables (Page Builder & Element Config)
      • 4.4 Basic App Styling (Site Styling UI)
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      • 5.1 Understanding & Managing Environments (In-Depth)
      • 5.2 Deep Dive: Page Configuration & Settings
        • Navigating the Page Builder Interface
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On this page
  • Introduction
  • Static Error Page
  • Dynamic Error Page
  • Custom error handlers

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  1. Reference

BetterForms Error Pages API

PreviousBF Enterprise DocumentationNextBF Streaming API

Last updated 8 months ago

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Introduction

This document covers the system static and app dynamic error pages and how they work. The static error page is a non-customizable page that will be shown for lower level errors (e.g. BF server, network, providers errors), and the app dynamic error page is shown for some higher-level errors (e.g. page not found, request timeout, and some FM errors like Invalid Data API token).

Static Error Page

Errors that occur before the app is able to connect to the DB or a site record was not found, for example, will be redirected to a static page that can not be customized. The picture below is an example of the static error page.

Dynamic Error Page

The error page can be accessed via the nav slug /error. It will be associated with either a default or custom page. The picture below shows the default error page.

Custom error pages

All apps have a system-generated error page that you can override. To override, simply add a page with the reserved nav slug of /error and you can create and customize your own page. Error detail data is saved to the app model as app.error, and can be accessed in the error page. The error object looks like this:

{
	"error": {
		"code": "404",
		"description": "Page Not Found",
		"message": "Page not found for slug: nopage"
	}
}

Custom error handlers

Besides customizing the error page, you can also customize how all errors are handled and override the default system behavior.

For example, the default ‘Page Not Found’ error would navigate to the /error page but if you would rather show a toaster alert, the following could be added to the App model.

{
	"errorHandlers": [{
        "actions": [{
            "action": "showAlert",
            "function": "action.options.text = action.options.error.message",
            "options": {
                "text": "",
                "title": "Error",
                "type": "error"
            }
        }],
        "codes": ["404"]
    }]
}

As it can be seen above, custom behaviours are added under a reserved global actions key errorHandlers, and that will be an array of objects. Each object having have codes and actions.

Key
Value

codes

array of error codes that the associated actions will run with.

actions

array of actions

The result from the example code above is the alert shown below.

Key
Path

code

actions.options.error.code

description

actions.options.error.description

message

actions.options.error.message

The error data can be found under options for each action of the array, for a given code. The error object has the same shape as previously presented and can be accessed as follows:

here
Complete Error Code List
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